//
//  MainTabbar.swift
//  Weibo
//
//  Created by mac on 16/1/13.
//  Copyright © 2016年 itcast. All rights reserved.
//

import UIKit

class MainTabbar: UITabBar {
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        addSubview(plusBtn)
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        let w = self.bounds.width / 5
        let h = self.bounds.height
        let rect = CGRect(x: 0, y: 0, width: w, height: h)
        var index: CGFloat = 0
        for subView in subviews {
            if subView.isKindOfClass(NSClassFromString("UITabBarButton")!) {
            subView.frame = CGRectOffset(rect, index * w, 0)
//            if index == 1 {
//                index++
//            }
//            index++
            
                index += (index == 1 ? 2 : 1)
            }
        }
        plusBtn.frame = CGRectOffset(rect, 2 * w, 0)
    }

    lazy var plusBtn: UIButton = {
        let btn = UIButton()
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button"), forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "tabbar_compose_button_highlighted"), forState: .Highlighted)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add"), forState: .Normal)
        btn.setImage(UIImage(named: "tabbar_compose_icon_add_h"), forState: .Highlighted)
        btn.sizeToFit()
        return btn
    }()

}